Effect of low temperature plasma on different wool dyeing systems

In this paper, the effects of low temperature plasma (LTP) treatment on the dyeing properties of wool were studied. Wool fibres were treated with oxygen plasma and three types of dyeing systems that are commonly used for wool dyeing, namely: (i) acid dye, (ii) chrome dye and (iii) reactive dye; were used in the dyeing process. For acid dyeing, the dyeing rate of LTP-treated wool fibre was greatly increased, but the final dyeinq exhaustion equilibrium did not show any significant change. For chrome dyeing, the dyeing rate of LTP-treated wool fibre was increased, but the final dyeing exhaustion equilibrium was increased only to a small extent. In addition, the rate of the afterchroming process was similar to the chrome dyeing process. In the case of reactive dyeing, the dyeing rate of LTP-treated wool fibre was greatly increased and also the final dyeing exhaustion equilibrium was increased significantly. As a result, it may be concluded that the LTP treatment could improve the dyeing behaviour of wool fibre under different dyeing systems.